I have a 1982 Corvette and just got done building a 1988 700R4 for it. The actual rebuilt itself went smoothly, but upon reaching the last step of the process before I can actually test it out, I ran into issues with the TV system. I understand that for the adjustment to be correct, the plunger needs to be flush with the bushing at WOT.

The problem is that there is so much effort required in making this happen, that something is bound to break, bend, or snap. I took the linkage apart on the valve body, but nothing appears to be stuck or out of the ordinary. The TV valve itself is free and moves smoothly. The spring also appears to be factory.

Does anyone have any suggestions as far as what is going wrong? I have never done this before, and I am at a loss. The cable is brand new and moves freely when disconnected. Looking in while the cable moves, it's clear that all mechanical advantage is lost when the plunger is less than 3 groves showing. The cable is more or less pulling at a 180 degree versus a 90 degree angle if that makes sense.

I'm frustrated at this point, and don't really have any clear idea where to go from here. I've done so much searching, and no one else has ever seemingly had this problem. If they did, maybe they just don't realize it because their pan wasn't removed like mine is. Any suggestions- I'm all ears!

The TV spring appears to be an aftermarket Black spring and if it is from what I can see in the picture it is way too stiff. I could send you the right spring and shim that I use in all of my 700R4's, if you want. It would cost 2 to 4 dollars for shipping it by mail. Call me at 909 795-1876. Dana

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